Metallic fastening inseam



y c. c. BLAKE METALLIC FASTENING INS EAM Filed Feb. 18, 1918 Patented May 10, 1927.

UNITED STATES.

' CHARLES C. BLAKE, OI BROQ KLINE, MASSACHUSETTS.

METALLIC FASTENING INBEAM.

Application filed February s, 1918. Serial a... 217,770.

The present invention relates to means for connecting members together such, for instance, as the shoe upper, welt and insole of a welt shoe, and more particularly to a 'metallic fastening connectingmeans which may be used instead of stitches for the inseam of a Blake welt shoe.

The Blake welt shoe is provided with a welt, upper and insole united by a sewed inseam with the unexposed faces of the welt and upper in the same plane so that the outsole may be secured to the welt in con tact with the entire surface of the unexposed face of the insole. With this construction the objectionable plastic filling between the insole and outsole and the discommoding marginal abutment essential in Goodyear welt shoes are avoided. While the Blake welt shoe is more flexible, durable and comfortable than any other type of welt shoe, for use by our soldiers in the trenches, where sewed inseams quickly rot under the watery conditions existing therein, it is desirable that the sewed inseam be replaced 2 by a metallic fastening inseam.

The principal object of the present invention is to produce a shoe, having all the beneficial advantages of a sewed Blake welt shoe, in which-the upper, insole and welt are united by a metallic fastening inseam.

To the accomplishment of this object, and such others asmay hereinafter appear, the features of the invention relate to certain constructions, arrangements of parts and methods of manufacture hereinafter de scribed and set forth broadly and in detail in the appended claims which possess advantages readily apparent to those skilled in the art. y i

I have selected an insole and the manner of its connection with the shoe upper and welt of a welt shoe for thepurpose of illustration as it shows the invention in its best form at present devised. It will be readily apparent,however, that in its broadest aspects the invention may be utilized to unite various components of other kinds of shoes and articles.

The various features of theiprcsent invent-ion will be readily understood from an inspection of the accompanying drawings, in which: a

. Figure 1 is a plan showing the metallic fastening inseam which unites the welt,

upper and insole of a welt shoe;

Fig. 2 is a detail in perspective, partly in section, of a lasted shoe and of a .welt which is being united to the lasted shoe by a metallic fastening inseam;

Fig. 3 is a detail in sectional plan showing a metallic fastening which has been inserted into the awl cut and then driven against the anvil by the awl;

Fig. 4.- is a similar view to Fi 3 showing the metallic fastening being driven into its final clenching position by the awl guide which acts as a driver;

Fig. 5 is a detail in perspective showing the manner in which the fasteningis formed from a strip of stock;

Fig. 6 is a detail in perspective of a metallic fastening illustrating the form it assumes in the finished shoe;

Fig. 7 is a detail of the die which simultaneously forms the bifurcations on one end of the shank of the metallic fastening and separates the fastening from the strip of stock, and

Fig. 8 isa detail in perspective, partly in section, of a finished shoe provided with themetallic fastening inseam. embodying the features of the present invention.

In. the illustrated embodiment of the invention an insole 1is provided with a series of slashes 2 which are formed normal to one face 3 of the insole along the peri heral margin thereof. The slashes 2 are. erein termed cuspidate slashes for the reason that the pair of curved cuts 4 in meeting, form a cusp 5. If it is considered desirable for the slash on the sole to form a true geometrical cuspidal curve, then the common tangent of the curved cuts 4.- should be radial to the peripheral edge of the sole adjacent the slash. The insole is also rovided with a series of awl cuts 6 igs. 3 and 4) each one of which extends parallel to the slashed face of the sole from the edge I face 7 of the insole to one of the slashes 2 which it intersects below the surface of the insole. The cuspidate slashes and awl cuts are formed normal to the face 3 and edge face 7 of the insole, respectively, and to that end the slashing and cutting tools are maintained at right angles to each other as.

their points of operation are transferred.

around the insole.

With the sole thus preparedit maybe united to a shoe upper and welt in any suitable manner found desirable or expedient.

Preferably the insole is tacked to a last 8 (Fig. 2) and then an n per 9 is lasted to the edge face 7 of the inso e in accordance with the method of lasting described by me in my United States Patent No. 1,261,741, dated April 2, 1918. In accordance with the method of lasting described therein the upper. 9 is updrawn to bring it to the wood of the last and the updrawn u per is secured bfy;

cement to the edge face 0 the in- SOle. A

er-the lasting operation, a welt 10, which has previously been provided with a longitudinal slit 11, is assembled with the lasted shoe in such a position that the contacting faces of the welt and upper andv of the upper and'ed e face of the insole are arranged in paral el planes normal to the face 3 of the insole (Fig. 3) and also with the unexposed faces of the welt and insole in the sameplane.

The upper, insole and welt are unitcd by' a metallic fastening inseam comprising standingskirtof the upper 7 is trimmed,

preferabl by the machine disclosed in my United S tates Patent No.' 1,373,403, dated Agril 5, 1921 and the outsole '14 (Fig. 8) is aid upon the welted shoe-and secured to the welt 10 by a line of stitches 15.'

.While in its broadest aspects the invention contemplates providing the insole with cuts and slashes before the fastening insert ing operation, ity is preferred to orm the cuts and slashes in the machine which forms and inserts the metallic fastenings. To this end the metallic fastening inserting machine preferably is rovided with an awl 16 arranged to reciprocateinfith'e plane of the slit 11 and cut an awl hole through the base of the slit 11, upper, and edge face 7 of the insole. into the body portion of the insole in a direction parallel to ,the face 32 After the awl 16 forms itscut'it is withdrawn and a gouge 17, having an anvil 18 formed thereon, is driven in a direction normal to the face 3 of the insole into the body portion of the insole thus forming a slash intersect-- ing the cut. below the surface of the insole.

n the meantime the metallic fastening is being formed inreadiness for insertion into the awl hole. To this end the machine carries a metallic strip 19 (Fig. 19) comprising a bar of brass, aluminum or steel, for instance, having substantially a rectangular work.

stock (Fi 5).

After he formed fastening 22 has been inserted into the awl hole 6 the awl 16 is again advanced (Fig. 3) to cause its front end to enter between the outside legs 13 and thus cause them to spread slightly and at the same time drive the inside legs 13 against the anvil 18 and thus initiate the spreading of the inside legs 13. Thereafter the guide 23, for the awl, is advanced to engage its front end' between the slightly spread. outside legs 13 and drive the fastening home so that the outside and inside legs thereof willclench backwardly into the base of the slit in the welt and the body rtion of-the insole, respectively, (Fig. 4). With this mode of operation the opposite ends of the fastening are completely buried in the The anvil 18 is then removed and the Work is fed to locate the tools for the insertion of another fastening.

Clenchable metallic fastenings have been used heretofore to unite component parts of shoes. These clenchable metallic fastenings comprise a sin le shank terminating at one or both ends with a clenching leg bent backwardly towards the shank. This leg is clenched in the stock'by driving the point of, the fastening against a segmental anvil held a ainst one of the parts to be united.

VVith t is construction and mode of operation the length of the leg is determined solelyby the characteristics of the fibre in the stock operated upon as it is apparent that when the fastening is driven into a soft spot the leg'will bend'easier and to a greater extent than when the fastening is driven .into' a hard spot. Obviously it is impossible, with the prior art clenchable metallic fastenings, to accurately predetermine the juncture between the shank and the clenching 1e and thus obtain a series of metallic fasteningsin the united parts having their shanks and clenching legs of uniform length, respectively.

. In the present case the bending of the legs 13 is produced by a tool inserted between the legs of a fastening ,hnving its crotch backed by the shank which is sufli- V ciently substantial to withstand, without buckling, the leg bending pressure exerted by the tool, and consequently the extent and direction of bend of the legs are independent of the characteristics of 'the stock being united By this construction and mode of operation it is possible to produce a series operation and method of manufacture are" the welt.

channeled insole, a yelt, a

OlltSOlG secured to the welt.

of metallic fastenings having shanks and clenching legs of uniform length, respectivel W ile it'is preferred to employ the specific construction,arrangement, mode of opera tionand-method of manufacture shown and described, it will be understood that this specific construction, arrangement, mode of not essential nor is the conjoint use of all the features of the invention essential except so far as specified in the appended claims, and it may be varied or modified without departing from the broader features of the invention. i

It will be also apparent to those skilled in the 'art that certain features of the present-invention are useful in themanufacture of other kinds of shoes than welt shoes; therefore,- the term sole used in the following claims must be'construed to mean any k nd of asole whether an insole or an outsole.

What is claimed as new, is:

1. A sole provided with a series of marginal cuspidate Slashes normal to one face thereof. a

2. A sole provided with a series of cuspidate slashes normal to one face thereof, and a series of slits formed in the edge face of the sole, parallel to the slashed face of the sole, each slit being arranged to intersect one of the slashes beneath the surface -of the sole. 7

3. A sole providedwitha series of slashes each comprising a cnspidalcurve having a common tangent formed on the surface of the sole, said curve having the common tangent thereof radial to the adjacent peripheral edge of the sole.

. 4. A shoe comprising an upper, an unchfinneled insole, awelt, a metallic fastening seam uniting said rts coinprising metallic fastenings locate in a lane passing through the edge of the iIlSO e intermediate its top and bottom faces, and an outsole secured to thevqelt'.

5. "A shoe cg liiprising an insole, an upper lasted to theedge face of the insole,a welt,

a metallic fastening seam uniting the welt to the lasted shoe, jan ontsole secured to '6. -A shoe comprising-an upper, an unetallic fastening seam uniting said parts com rising metallic fastenings having the oppos te ends thereof anchored in the body portionv of the welt and insole, respectively, between the surfaces thereof, and an outeole secured tothewelt.

7. A shoecomprising an vinsole, an upper,

at Wells, a metal ic fastening seam uniting said parts comprising bifurcated metallic,

fastening's having one end double clenched in the body portion of the insole, and an of the slit in the welt,

8. A shoe comprising an insole, an upper, a welt, a metallic fastening seam uniting said parts comprising bifurcated metallic fastenings having one end double clenched in the interior of the welt, and an ontsole secured to the welt.

S). A shoe comprising an insole, an upper, a welt, a metallic fastening seam uniting said parts comprising bifurcated metallic faitenings having both ends double clenched within the body portions of the insole and welt, respectively, and an outsole secured to the welt.

10. A shoe comprising an insole, an upper, a welt, a metallic fastening seam uniting said parts within the body portions thereof comprising metallic faitenings bifurcated at both ends having their top and bottom faces arranged in. parallel planes, and an-outsole secured to the welt.

' 11. A shoe com rising an insole, an upper,

a welt, a metallic fastening seam uniting said parts comprising metallic fastenings having their top and bottom faces-arran ed in parallel planes, parallel and intermediate to the top and bottom faces of the insole, and an outsole secured to the welt.

12. A shoe comprising an upper, an insole, a welt, a metallic fastening seam uniting aid parts comprising metallic fastenings having one end bifurcated and clenched within the body portion of the insole, and;

an outsole secured tothe welt.

13. In ashoe comprising an upper, an insole and an ungrooved welt, a metallic fattening seam uniting said parts comprising metallic fastenin'gs having one end hi furcated and clenched within the welt and it; other end projecting through the edge ofthe welt and into the insole.

14. In a shoe comprising an. upper and a welt, a metallic fastening seam uniting said parts comprising metallic fastenings having both ends bifurcated one end being a tirely through only one of the members with one end buried from sight in one member, and with the other end buried from sight in the other member. 1 I, 17. In combination a welt anda member secured thereto by a headless metallic fastening having one end anchored within the body portion of the welt and the other end anchored in .the member, the end anchored in the welt being bifurcated. L,

18. In combination, component shoe parts united by means of a fastening inserted through only one of the parts, said fastening having a shank provided witha pair of clenching points. turned bac-kwardly toward the shank and buried from sight in thestock 'at each end of the shank.

' 19.111 combination, component shoe parts united by means of a fastening inserted through only one (if said parts. said fastening having a shank rectangular in cross rection and provided with a pair of clenchingpoints turned ba kwardly and buried from si shank.

20. In combination, component shoe parts secured together by a series of double clenched metallic fastenings inserted through-only one of said parts and buried from sight in both parts, the shanks of the ght in the stock at each end of the v fastenings being uniform in length throughout the series; i

21. That improvement in the art of preparing soles for the inseaming operation which consists in slitting the sole through its edge. face and parallel to the surfaces thereof, and intersecting said slit by a cuspidate slash through one surface of the sole having its cusp directed outward.

. 22. That improvement in the art of p reparing soles for the inseaming operation which consists in slitting the sole by a cut penetrating through its edge face and haymg a definite width, and intersecting said slit by a cuspidate slash through one surface of the sole having its cusp positioned substantially centrally of the width of said slit.

23. That improvement-in the art of preparing soles for the inseaming operation which consists in producing a'series of independent, marginal slits, each having a greater length than width, by cuts enetra't ing the edge surface of the sole,an produc-.

ing independent cuspidate I slashes through one surface ofthe sole which are of a depth sufficient to'intersect said slits and so located i that each cusp is positioned substantially so centrally of the width rected outward...

pf'a slit andis di- 24. A shoe comprisingian upper, an unehanneled insole and a welt arranged with their unexposed, faces in the same plane, a metallic fastening seam uniting said parts,

and an outsole securedto the welt.-

25. That improvement in the art of uniting component shoe arts which consists in inserting below the surface thereof the shank of a-fastening having bifurcated ends, said shank" extending throu h only one. of

the parts and spreading t elegs of the" bifurcate' ,ends apart and bending them baekwardlg are i'secure together y a fastening having a into the arts whereby the partspair of double clinched JOlIltS connected by a shank buried from sight within the parts.

26. That improvement in the art of inseaming welt shoes which consists in assembling a welt with an up )er and an insole, a-nd inserting metallic f astenings through said parts in a plane passing through the edge of the insole intermediate its top and bottom faces. v

27. That improvement in the art of making welt shoes which consists in lasting an upper to the edge face of an insole, attaching a welt to the lasted shoe by a metallic fastening seam and securing an outsolc to the welt.

28. That improvement in the art of preparing soles for the inseaming operation which consists in slitting the body portion of the sole through the edge face thereof, and intersecting the slit in the sole below the surface thereof by a cuspidate slash normal to said slit.

29. That improvement in the art of uniting component shoe parts which consists in awling through the parts, driving an anvil into one of theparts perpendicular to the awl cut, placing a metallic fastening bifurcated at both ends into the awl cut, and inserting an instrument between the legs of the bifurcations at one end of the fastening to drive the other end of the fastening against the anvil and thus cause the anvil to clench one end of the fastenin in one part and the instrument to clench the other end of the fastening in another part.

30. That improvement in the art of uniting component shoe' parts together which consists in awling through the parts, driving an anvil into one of the parts perpendicular to the awl cut, placing a fastening bifurcated at both ends into the awl cut, forcing the awl, or a separate instrument, between the legs-of the bifurcation at one end of the fastening to drive the other end of the fastening against the anvil to initiate the spreading apart of the legs at both ends of the fastening, and jamming another in strument between the partially spread legs at one end of the=fasteningto'forcibly press the fastening against the anvil to complete I the spreading apart of the legsat both ends of the fastening and thus cause the legs to clench in the parts.

-31. That improyement in the art of maktill till

.ing welt shoes which consists in slitting 12o prising an insole and an upper secured to the edge face thereof; and with the unslit 33. That improvement in the art of mak ing welt shoes which consists in assembling a welt with a lasted sho'e comprising an insole and an upper secured to the edge face thereaf with the contacting faces of the welt and upper and of the upper and insole in paral-, lel planes normal to the face of the insole, inserting metallic fastenings, through the welt, upper and insole and securing an outsole to the welt... g

34. A shoe comprising an upper,'an unchanneled insole and an ungrooved. welt hav-, inf; their edge surfaces opposite to each ot ier, an inseam comprising metallic fastenings extending through said edge surfaces and the interposed upper, having the opposite ends thereof anchored in the interior of the welt and insole, and an outsole secured to the welt. v

,35. The step product in'the manufacture of shoes comprising a lasted, unsoled shoe havin an upper, an insole and await on opposite sides of said upper with their lower 1 surfaces in the same plane and their edge surfaces adjoining the, .u per, and an in seam comprisin metallic astenings extending throughsald upper and adjacent portions of the welt andinsole having the endmther instrument; against the first'nam thereof clenched in the interior of the welt "and insole;

surfaces in the same plane and their edge surfaces adjoining the upper, and an .inseam comprising metallic fastenings extending across the joints formed by the Walt,

upper and insole and completely embedded in said materials s i 37. In. a shoeof; the'typefinwhich the edge face surfaces of the welt and insole adjoin the upper at opposite sides thereof with their lower surfaces in the same plane, the combination of marginal shoulders ro'vided on the interior of said welt and inso e and a metallic fastenin extending through said edge surfaces In havin its ends anchored against said shoulders, w ereby the is com let e'l a 38. I fia I embedded in said materials;

from sight 5 and ancho product in the manufacture 00, a welt and an insole secured together by a metallic fastening bifurcated in the .welt and 40. A sole provided with aseries marthe other end buried from sight and an ginal cuspidate slashes normal to one facev thereof, and a like number of marginal slits substantially midway the sole thickness and communicating with-said slashes.

41. A sole provided with a series of ens-- pidate slashes normal-to one face thereof and having their cusps directed outward, andta, series of slits formed through the edge face ofthe sole in a direction to intersect.-

each of the slashes beneath the slashed face of the sole. 4 I I 42; A sole provided with a series of slashes each comprising a cuspidal curve having a common tangent formed on one surface of the sole, said curve having the common tangent thereof radial to theadjacent peri h eral edge of the sole, and a series of slits extending fronr the edge" of the sole to said slashes radial in a like manner.

43. ,That improvement in the art of uniting component shoe parts which consists'in inserting the shank of a fastening into said" 5 parts, driving an instrument against one I end of the fastening to cau'sejthe other end of the fasten-ing to engage an anvil and clench in the work, an then drivi and en of the fastening to cause itrto clench iii the workf 44. That improvement in the art of unitin'g; component shoe parts which consists in inserting instrument. inst one end of the shank the shank of a fastening having bifurcated ends into said parts, driving an of the fastening to cause the other end to engage an anvil and clench in the work, and

thendriving another instrument between the bifurcations on the first named end of the fasteningto cause it to clench in the work. 45. A ,welt shoe, having in combination, an. upper, a welt slit alongone longitudinal to provide an interior shoulder, an ins'oie provided with an interior shoulder, and

means for securing, the upper, welt and insole to ther compri 'an'jnseam engaged with t e interior shoul crs on'the welt and insole and arranged in a plane parallel-and intermediatethe .top and bottom faces of the insole.

to this specification:

- crusts-1s 0. rass;

. In testimonv whereof I have iny 

